The system integrates communication protocols from the logical link layer to the application layer, supports PPTP, L2TP VPN, IPTABLE firewall, static and dynamic routing, PPP server and PPP client, DHCP server and DHCP client, DDNS, firewall, SNAT/DNAT, DMZ host , WEB configuration and other basic functions .
Built-in two LoRa modules with selectable frequencies of 470/868/915M, the parameters of TX/RX can be defined through the web .
Support dynamically load/update applets developed by users or third parties to implement edge computing functions, such as calling MQTT/CoAP/UDP to send and receive messages
Also it can support the following applications: a) As DTU/RTU: The system has an external RS485 port, support RS485/Modbus data transmission through the Internet. b) As sensor concentrator: The system has an external I2C port, which can be directly connected to smart sensors with I2C interface.